Write an Equation for the Linear Function and Use It $\mathrm { T } = 0.89 \mathrm { p } ; \$ 44.50$

question 71

Multiple Choice

Write an equation for the linear function and use it to answer the given question.
-In the town of Oak Forest, a 2% local sales tax and a 9% state sales tax are charged on all retail sales. Let p be the before-tax amount of a purchase in dollars. Let T be the after-tax amount of the
Purchase. Find a linear equation that describes how T varies with p. What is the total price of an
Item that costs $50 before taxes?

• A) \(\mathrm { T } = 0.89 \mathrm { p } ; \$ 44.50\)
• B) \(\mathrm { T } = 1.11 \mathrm { p } ; \$ 55.50\)
• C) \(\mathrm { T } = 0.11 \mathrm { p } + 1 ; \$ 6.50\)
• D) \(\mathrm { T } = 0.93 \mathrm { p } ; \$ 46.50\)

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